Mr. Gilpin's Tables 
zy6 
100 to 1 inclusively. It must be observed, that each of these 
tables occupying one page, is divided in the middle for adapt- 
ing it more conveniently to the size of the paper ; but the 
whole of each page is to be considered as one continued table. 
The second column of all the tables gives the specific gravities 
of the corresponding mixtures of spirit and water in the first 
column, taken from the table cf specific gravities in the Sup- 
plementary Report, the intermediate spaces being filled up by 
interpolation. In the third column 100 parts by measure of 
pure spirit, at the temperature marked on the top of every 
separate table, is assumed as the constant standard number, to 
which the respective quantities of water by measure, at the 
same temperature, are to be proportioned in the next column. 
The fourth column, therefore, contains the proportion of water 
by measure, to 100 measures of spirit, answering to the pro- 
portions by weight in the same horizontal line of the first 
column. The fifth column shews the number of parts which 
the quantities of spirit and water contained in the third 
and fourth columns would measure when the mixture has been 
completed ; that is, the bulk of the whole mixture after the 
concentration, or mutual penetration, has fully taken place. 
The sixth column, deduced from the three preceding ones, 
gives the effect of that concentration, or how much smaller the 
volume of the whole mixture is, than it would be if there was 
no such principle as the mutual penetration. The seventh 
column shews the quantity of pure spirit by measure, at the 
temperature in the table, contained in 100 measures of the mix- 
ture laid down in the fifth column. Lastly, the eighth column 
gives' the decimal multiplier, by means of which the quantity 
by measure of standard pure spirit, of ,825 specific gravity at 
